IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2005-2009)
Carbon isotope and C/N ratios of suspended matter in rivers: An indicator of seasonal change in C4/C3 vegetation
W.G. Liu; Z.S. An; W.J. Zhou; Head, M.J.; D.L. Cai
2003
Source PublicationApplied Geochemistry
Volume18Issue:8Pages:1241-1249
Abstract

     A combination of d 13C values with C/N ratios in suspended matter has been used to examine the seasonal relationship
between C4 and C3 vegetation along the Loess Plateau, NW China. The C isotopic composition of suspended organic matter in rivers, together with C/N ratios can differentiate between soil and plant material, and can be used to estimate the relative contributions of soil organic C and plant litter to the suspended matter. The relationship between C isotopic composition and C/N ratios indicates that the samples are a mixture of two end members: (1) modern soils with relatively constant d 13C values, low C content and low C/N ratios; (2) plant litter with varying d 13C values, high C content and high C/N ratios. The results reflect the seasonal distribution of C4/C3 vegetation within the area studied, as part of the Loess Plateau. The abundance of C4 grasses is about 20%for the current summer vegetation ecosystem in the eastern part of the Loess Plateau. Hence, the use of d 13C values and C/N ratios of suspended matter in rivers and modern soil may be useful for reflecting seasonal distribution of C4/C3 vegetation in catchments. This could be a useful tool for distinguishing between catchments for GIS studies, and long term planning for ecological management of catchment areas.

Subject Area地质学 ; 地球化学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/2527
Collection黄土与第四纪地质国家重点实验室(2005-2009)
Recommended Citation
GB/T 7714
W.G. Liu,Z.S. An,W.J. Zhou,et al. Carbon isotope and C/N ratios of suspended matter in rivers: An indicator of seasonal change in C4/C3 vegetation[J]. Applied Geochemistry,2003,18(8):1241-1249.
APA W.G. Liu,Z.S. An,W.J. Zhou,Head, M.J.,&D.L. Cai.(2003).Carbon isotope and C/N ratios of suspended matter in rivers: An indicator of seasonal change in C4/C3 vegetation.Applied Geochemistry,18(8),1241-1249.
MLA W.G. Liu,et al."Carbon isotope and C/N ratios of suspended matter in rivers: An indicator of seasonal change in C4/C3 vegetation".Applied Geochemistry 18.8(2003):1241-1249.
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